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Selected Asteroid

Select an asteroid from the catalog or click one in the map.

Close-approach geometry Earth view

Top-down view of Earth's neighborhood. The solid ring is the Moon's orbit (1 lunar distance).

Discovery feed MPC · unconfirmed

Objects spotted in the last days, not yet confirmed. Hover a dot.

Fetching the confirmation page…

Approaches — distance vs time log LD

closer = hotter— Moon (1 LD)

Miss-distance distribution LD

About

Asteroid Tracker is a live, interactive view of the near-Earth asteroids passing by our planet. It plots every catalogued close approach over a ±70-day window, places each object on its real Keplerian orbit from NASA/JPL elements, and animates the flybys so you can watch them sweep past Earth.

Alongside the heliocentric map you get a top-down close-approach geometry showing the miss distance against the Moon's orbit with its 3σ uncertainty corridor, the daylight blind spot where surveys can't see, the live discovery feed from the Minor Planet Center, estimated sizes and impact energies, JPL Sentry impact-risk flags, and recent fireballs.

Data: NASA/JPL CAD, SBDB, Sentry & Fireballs. Sizes are estimated from brightness; impact energies are hypothetical — these objects miss Earth. Treat everything as indicative, not operational guidance.

📅 Subscribe to the flyby calendar — every pass within 5 lunar distances, plus all sub-lunar passes to 2100 · download .ics

Keys: space play · N now · ] next pass · ←/→ step day · ↑/↓ select · C Earth-lock · T tilt · G glare · scroll to zoom, drag to pan, ⇧+drag to tilt

How to use this tracker → · Send feedback ✉